import Foundation

extension String {
    var firstLetter: String {
        String(prefix(1)).uppercased()
    }

    var makeReply: String {
        let allLines = components(separatedBy: .newlines)
        let nonBlankLines = allLines.filter { !$0.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty }
        var result = nonBlankLines.joined(separator: "\n")
        result = "> \(result)"
        return result
    }
}